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Well after 4 months of fitment and road testing these headers are finally ready to go. I wanted to make sure there wouldn't be ANY problems with them so I've had them on my car for the past 4 months and they're still being great to me. I've uploaded a sound clip of the headers + TurboXS Turboback with catalytic converter: Here (2.7 meg MPG)

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EDIT: New dyno available.. comparing this header with the GT Spec header. Please note that the numbers read low but check out the difference in the tuned cars. The blue line is from my car with the Stone Racing Headers. Both cars had turbobacks, and ported turbos. This is not an altered dyno, both my car and the car with the GT Spec headers were tuned to their maximum power:

* All stainless steel design.. Not even a hint of rust and I've been through snow and rain quite a bit this year. They've been holding up great for me.

* Complete kit with uppipe

* Extra EGT bung for EGT gauges or even an O2 (it's a little close to the manifold for extended O2 sensor usage though)

* Bungs for factory EGT and O2 sensors (These are actually EASIER to get to than the stock locations, I was pleasantly surprised)

* NO LEAKS! I sent my OEM uppipe to the manufacturer to get the upper flange modeled after it. Not even a whisper of a leak since installing them. The uppipe even has a flex joint in it.

Price: $350 Shipped

Payment is easiest through paypal. Our paypal address is ssautochrome@wrxhackers.com These come with a 14 day money back guarantee if for any reason you're not happy with them. If you'd prefer to mail a money order or certified check, or to fax your order in just PM me and I'll give you the information.

Only note about install: The plastic mud guard will need to be trimmed or removed. I just took mine off. Also, if your car is lowered more than 1.5" these may not be for you. The 4-1 design uses large piping to get maximum torque and they do hang down pretty low. I've never scraped with my car but it's stock height.

You have to use the supplied uppipe actually. Take a look at the picture and you'll notice the different flange at the bottom. The nice thick donut gasket there keeps it from leaking like a lot of uppipes tend to do.

Hmm, interesting RH primary routing. You took it to the other side of the oil filter? How has oil temps been and what was the temperature of the day of your hottest run? It looks like the oil filter would be surrrounded by the primaries and the up pipe and perhaps the filter would suffer from heat sink right after the oil went through cooler. I certainly don't know but would like to know if the oil temps are any higher.

The primaries are shorter than other headers and I would think that should increase the scavenging effect of the 4-1 design at the collector.

What is the i.d. of the primaries? the collector? the up pipe at the collector? the up pipe at the turbo?

I will be following with interest. Unique design that isn't like all those trying to make inexpensive HKS's.

Good call on the oil temps. I had a similar concern and I HIGHLY recommend you wrap these with a heat wrap to keep heat inside of them and out of your engine/oil. ( Racer Wholesale has wrap for pretty cheap.. not associated with them at all but they've been good to me with my helmet and wrap purchases. Get some of the thicker wrap and some of the safety wire to keep it on there nice and snug. )

I do not have an oil temp gauge installed yet... But I could say that you might see a rise in temps if you don't wrap them. They do run VERY close to the filter and the pan. I don't have the technical specs handy at the moment with the dimensions but I can get them for you tomorrow. I've got a prototype set in my closet at the apartment so I'll see if I have a spanner that'll measure accurately, if not I'll give you my best estimate with a ruler.

I like very much that you acknowledged the possibility might even exist. I (and I am sure others) appreciate your candor and thoroughness on thinking out the design and possible inpacts. A lot of vendors would jump down my throat daring that I question the design! Like I said I was not sure but it is something to think about - glad that you already have. Some feedback from a user with a gauge before and after the install on warm days would be helpful as you get these into full swing.

I will throw in another wrap supplier for reference - http://www.mmrusa.com/HSwrap.htm I have never used them but had them favorited for future reference if I ever needed some wrap - now I have two.

Holding the heat in the primaries could only help the energy to the turbo. Have you found any problems with the condition of the wrap especially with as wet as our winter has been and the lower profile of the header?

Believe me these headers had quite a bit of feedback in the design phase. The first set they sent me had the bungs in an impossible spot with the subframe in the way of the O2 sensor. Silly me didn't notice this until I was 4 hours away from home, in a borrowed garage, with the headers all bolted in... 6 hours of wrenching total taking out the stock parts, putting the prototype in, taking the prototype out, putting stock parts back on. After that experience I kind of made it my personal goal to make these production ready. I even ended up with a minor concussion after a wrachet slipped off a bolt and whacked me in the forehead.

With any stainless header, you're going to lose quite a bit of heat with the length the exhaust has to go through to get to the turbo. Keeping that heat in is often overlooked but definitely important. The wrap has been ok here despite the extended exposure to all the snow and rain it's seen this year. I feel even more confident about the headers durability after all the nasty weather we've had. I might end up replacing the wrap in a couple more months but so far it's been ok.

Edit: Btw jehcpa.. I thought I recognized your name.. I'm crazyhorse from wrxhackers.com I've got a UTec map for a stage 2 car + these headers already done up actually. Going to have it fine tuned on the 19th.

Yea I'm stuck in SM at the moment without a suspension. The joys of modifying your car before being interested in autocross... I've been happy with the headers thusfar on the course. I know my UTec needs to be dialed in a bit but other than that they've treated me well. I'm leaving tomorrow night to head down to Atlanta and hope to have the dyno's scanned and posted by Saturday night. Then I've gotta get my front sway bar on and rewrap the headers by next weekends autocross. Always have something to wrench on.

Locally, I should easily beat the SM guys in PAX, but my real nemesis is the ITR's in STX with me. I'm probably giving up some hp right now with a leaky UP, so this should take care of that once and for all.

You'd be FAR better off wrapping your oil filter w/ heat reflecting material (looks like tin-foil) than the header. Wrapping stainless steel will cause it to crack over time. This will have the same overall effect without messing up the header.